Blackjack Strategy Deviations
- Blackjack Deviations From Basic Strategy
- Standard Deviation Blackjack
- Blackjack Basic Strategy With Deviations
Blackjack Deviations From Basic Strategy
Here the distribution of blackjack outcomes predicts you will win or lose 19.77 units 68% of the time you play 300 hands, 95% of the time you will fall within 2 standard deviations and win or lose 39.54 units and 99.7% of the time you will fall within 3 standard distributions and win or lose. For blackjack and its variants (e.g. Blackjack Switch, Spanish 21), the true count also serves a strategic purpose: the AP has mid-hand decisions to make (stand, hit, double, split, surrender) that vary based on the true count. For example, in blackjack: With a high true count (larger bet), the AP will adjust his play from basic strategy. Not all blackjack playing deviations are created equal. Though we strongly recommend that you learn the top 18-20 deviations, in this video Colin shares which two provide the most value to a.
So what are blackjack deviations? Deviations are simply times where you will alter your play. They are always mathematically driven, meaning they are never based off of a hunch or a pattern of wins or losses. There are 2 kinds of deviations: Playing Deviations and Betting Deviations. A casino Blackjack Strategy Deviations bonus must be staked a set number of times before a withdrawal can be made, this is known as the turnover requirement or wagering requirement. Blackjack Strategy Deviations If a bonus of £100 has a turnover requirement of 40x you must stake a total of £4,000 in the casino before a withdrawal.
LS
17 vs A
16 vs 7
16 vs A
15 vs 7
15 vs 8
15 vs A
14 vs A
13 vs 10
88 vs A
The charts should look like this and show how the advantage changes with the count. I want to see a chart and not just index numbers.
I only need the ones listed above because I got the rest from https://www.card-counting.com/cvcxonlineviewer3.htm
I know I'm asking for a lot and I doubt anyone will even bother with my first request, but it would be great if I could also get charts for the following:
6 Deck H17 DAS
99 vs A
6 Deck H17 NDAS
99 vs A
Double Downs for 6 Deck H17
11 vs A
10 vs A
8 vs 6
7 vs 6
A8 vs 6
A2 vs 6
6 Deck H17 Hard Hit/Stand
16 vs A
15 vs A
12 vs 6
A7 vs A
I'm making a basic strategy chart that includes playing deviations in the chart. Basic strategy is the first word when there is a playing deviation in a white space. Here is what I have so far. If I can get the charts I asked for, I will show the updated chart.
Edit: The values for the previous chart were floored. They should be correct now.
The black numbers are EV-Maximizing indices. They are not ideal for Doubling, Splitting, and Surrendering. If I can get charts for the following, I can improve the table. I will post the rest of this table if I can get what I asked for, along with a table for 6 Deck, S17, DAS, LS. I have added all of the playing deviations from the site I previously linked except for a few splits that are not worth the risk.
When it comes to doubling, you should double for less if the true count is in between the EV-Maximizing index and the Risk Averse index. If it's below the black number, you would hit. If it's above the gold number, you would do a full double down. The same goes for Insurance. Insure for less if the true count is between the two numbers. As for even money, you either take it or don't, but it's still risk averse. This is ideal for Kelly betting.
I can add way more to these tables if someone is willing to send me the charts. I will post more tables if someone is willing to help me with playing deviation charts.
- Appendices
- Miscellaneous
- External Links
On This Page
Introduction
To use the basic strategy, look up your hand along the left vertical edge and the dealer's up card along the top. In both cases an A stands for ace. From top to bottom are the hard totals, soft totals, and splittable hands. There are two charts depending on whether the dealer hits or stands on soft 17.
Other basic strategy rules.
Standard Deviation Blackjack
- Never take insurance or 'even money.'
- If there is no row for splitting (fives and tens), then look up your hand as a hard total (10 or 20).
- If you can't split because of a limit on re-splitting, then look up your hand as a hard total, except aces. In the extremely unlikely event you have a pair of aces you can't re-split and drawing to split aces is allowed, then double against a 5 or 6, otherwise hit.
Blackjack Basic Strategy With Deviations
Ideally, the basic strategy shows the play which, on average, will result in the greatest win or the least loss per initial hand played. The way I usually go about this is to look at the initial 2-card hands only. Generally, this will result in the overall best play. However, soft 18 against a dealer ace when the dealer stands on soft 17 provides the only known exception that I am aware of for any number of decks. As my blackjack appendix 9 shows, a 2-card soft 18 vs A has an expected value of hitting of -0.100359, and of standing -0.100502. So with two cards it is very slightly better to hit. However, not all soft 18's are composed of two cards. The more the cards in the player's hand the more the odds favor standing. Simulations show that if forced to always hit or always stand, it is better to stand. I would like to thank Don Schlesinger for bringing this unusual play to my attention.
Written by:Michael Shackleford